import { Component, OnInit } from '@angular/core';
import * as echarts from 'echarts';

@Component({
  selector: 'app-pie',
  templateUrl: './pie.component.html',
  styleUrls: ['./pie.component.scss']
})
export class PieComponent implements OnInit {

  myChart = null;
  constructor() { }

  ngOnInit(): void {
    this.initCharts();
  }

  initCharts() {

    let ec = echarts as any;
    this.myChart = ec.init(document.getElementById('echartsPie'));

    const option = {
      title: {
        text: '某站点用户访问来源',
        subtext: '纯属虚构',
        left: 'center'
      },
      tooltip: {
        trigger: 'item'
      },
      legend: {
        orient: 'vertical',
        left: 'left',
      },
      series: [
        {
          name: '访问来源',
          type: 'pie',
          radius: '50%',
          data: [
            { value: 1048, name: '搜索引擎' },
            { value: 735, name: '直接访问' },
            { value: 580, name: '邮件营销' },
            { value: 484, name: '联盟广告' },
            { value: 300, name: '视频广告' }
          ],
          emphasis: {
            itemStyle: {
              shadowBlur: 10,
              shadowOffsetX: 0,
              shadowColor: 'rgba(0, 0, 0, 0.5)'
            }
          }
        }
      ]
    };
    this.myChart.setOption(option);
  }

}
